938370.fig.001
Figure 1: FE-SEM images of (a) as-prepared precipitates collected from the solution; (b) the products grown on the ZnO buffer layer; (c) products grown on a plain substrate as the ethanol-water volume ratio of 3 : 1. XRD patterns of (d) as-prepared precipitates collected from the solution; (e) products grown on a substrate with or without a ZnO buffer layer as the ethanol-water volume ratio of 3 : 1. Si substrate is labeled with asterisk (*).